menu
The app's menus and context menus, the tray icon and system notifications.
An app has it by having @crossbind/core-app-host, which lists it as a dependency: there is nothing to install or list.
Use
A click of an item with an id is the event menu; menu.popup opens a context menu at the page's point.
Platforms
macOS, Linux and Windows; menu.setDock is macOS's alone. On a phone each call rejects. A Linux tray and its notifications go over D-Bus, and a Windows notification shows as a balloon of the tray's icon.
Replace or leave out
It holds the roles menu, notification and tray. An extension that gives replaces: 'menu' takes that role alone, and this one goes on with the rest; app: { without: ['menu'] } in crossbind.config.js leaves it out. The guide shows how, and extensions.md what a replacement answers.
app.md has the menus' items, and Tray and notifications the rest.